Superheater



M, HARDvr 1 SUPERHEATER Dec.' 26, 1933.

Filed oct. 9, 1931 f2 Sheets-sheet 2 INVENTOR ATTORNEY Patented Dec. Y 26, 1933 Malcolm Hara,oa1umet oity, 111., assignor to The Superheater Company, New York, N. Y.

VApplication october 9, 1931. lserial 'Nanousss 1 claim. (o1.1zz`4s1) The present invention has to do with boilers 'As illustrated, the water circulating pipes have generally and more particularly relates V4to locooneend as 25 connected to and in communi.- motive boilers in whichfthesteam is rst supercation with the V,rear water leg 23 while their heated bythe gas flow from the furnace and subother ends v26 are fastened to the crown sheet'- 5 sequently by furnace radiation. y Y 21,- being in communication with the'waterV and 6 0, Y An object of the invention is to protect a steam space above the crown sheet.V radiant superheater subjected to furnace radasuitably mounted onv the kwater circulatingv tion Vfrom being burned .out particularly durtubes are the metal spacingmembers 2'7. In pracine periods of operation when no Steam passes tice, the tubes are secured to these members in lo through the superheater. any preferred manner, such vas by spot welding. 65

Another object of the invention is` to provide The spacing members aisosuppcrt pipes 19 and a locomotive boiler having a radiant superheat- 2o of the Superheating units and these pipes may el dSpOSed in the furnace f the boiler and Sup,- also be fastened tothe spacing Vmembers by spot ported Within C105@ DIOXmy t0 a Water C001C1 welding or the like. It is also within the scope l Surface comprising a plurality of Water @ironor the invention to make the spacing members, 70 latng tubes in C0mmlllat01 With the Ter-W- if desired, of asuitable' refractory heat resistter legs and the space above the crown sheet of jpg materiaL Y f the fullac The water circulating pipes provide a water Further and other objects of theinvention will `Cpp-,led Sul-face for protecting the pipes of the 2,0 more fully appear from the followinedeserpradiant units and prevent tnelatter from being tion takenin connection with the aCCOmDaIlYIlg burned out especiallyV during periodsv of opera.- Half/mg?, 1n Whch l tion whennosteam'passes through the units, as a Flg'l 15 a fragmentary Vle/W and partly m Sec' for example when the locomotive engine is at tion of a locomotive boiler. resp f Fig 2 is a fragmentary-wrend view of the Associated'with the'boiler area pluralityof 89 .e5k the outlet portion of. the rear header of Fig. 2)

Y 4.5Y and is thereof.

boilerf, v I v er? 3 Meer een o@ une 3-3 of isfnt'igsktcahttt 1g'. V f in kthese ues .the several unitsV of a primary arigsesflilci'ea unit of the radiant or second' aprheattr (Itiot shown) are arranged for super- B ,Y Fig. 5 is a sectionftalen on the line 5-5 of n ea mg e s eam' K. the inlet portiono the rear header shown in prlrlguelstgg tgt tpodwo I Elli-iig.. 6 is a section` taken on the line 6`6 of -Steam generated be Superheated by the radiant Y.

D superheater alone.v Or the radiant superheater may be Yemployed as a Vprimary superheater and the convectional superheater as a secondary, as is well understood. I y

The superheated steam inthe primary superheater' is directed into conduit 29 by means wellVA 5 known in the art and is supplied through the inlet portion 15 of the rear header r'12 and from the latter is passed throughtheseveral superheating units which are subjected to furnace In accordance with the invention the locornoftiveV boiler includes a furnace l() in which the radiant'superheater, broadly denoted 11, is' sup,- ported. Mounted at the rear end of the'boiler L1o is a header 12 to which` leads as 13 and ,14 of the units oi the superheater are appro'priately connected.' vInlet and outletportions 15 and -16A` are suitably'connect'ed to the header, being reue spectively in communication with chambers 11 Pipes 19 and 20.01 a unit are integral with OWS through the Collecting Chamber ,13 t0 the respective leads 13 and`14` and extend longitudioutlet portion 16 of the rear header and is directed f nally of the furnace adjacent the ycrownsheet into conduit 30 operatively associated with the 21 thereof.V These pipes also pass through a, steam chestof the engine, as iswell understood.

feo tnimbie or ferruie 22 connectedto the spaced Since certainchanges may be maden the 00nlos l walls of the rear water leg 23. struction above described and differentembodi- A plurality of spaced Water circulating pipes ments 0f the IlVeDUOIlACOuld be made Without 24 extend longitudinally of the'furnace within departing from the sccpe'thereof, it isintended close proximity and parallel to the radiant superthat all "matter containedin the above descripradiation. Subsequently the superheated steam .,190 f,

aheater pipes19 and 20.*` i n Y i V tionor shown in the accompanying drawings shall 140;

iva

some through the crown of the rebox, superheater elements in the space between said water tubes, rebox Wall and crown, andV inlet and outlet headers for said elements at the rear of the rear face of said boiler, said elementsextending through said rear water lee,r to connect with said headers.

MALCOLM H ARD. 

